US8187535B2 - Robotic handling system and method with independently operable detachable tools - Google Patents
Robotic handling system and method with independently operable detachable tools Download PDFInfo
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- US8187535B2 US8187535B2 US11/570,544 US57054405A US8187535B2 US 8187535 B2 US8187535 B2 US 8187535B2 US 57054405 A US57054405 A US 57054405A US 8187535 B2 US8187535 B2 US 8187535B2
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- movable
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- analytical system
- movable device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/0099—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor comprising robots or similar manipulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0401—Sample carriers, cuvettes or reaction vessels
- G01N2035/0429—Sample carriers adapted for special purposes
- G01N2035/0434—Sample carriers adapted for special purposes in the form of a syringe or pipette tip
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
- G01N2035/1076—Multiple transfer devices plurality or independently movable heads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/2575—Volumetric liquid transfer
Definitions
- the invention herein described relates generally to robotic handling systems and methods, particularly for analytical applications, more particularly for liquid sample analytical systems, and still more particularly for bioanalytical applications.
- Sample handling robots of various configurations are known in the biotechnology industry.
- a common feature of such systems is the use of a robotic or other motion control device to either move a fluid aspirating/-dispensing syringe (herein generally referred to as a sampling probe) about a deck of vessels or other deck components like wash stations, reagent troughs, injection valves, etc., or to move the vessels and/or other deck components relative to a stationary sampling probe.
- a sampling probe a fluid aspirating/-dispensing syringe
- plural sampling probes are ganged together for common movement by a sample handler.
- the sampling probes are attached to a single holding bracket affixed to a transport member, commonly referred to as a gantry. All of the sampling probes travel together as a unit. While such systems are easy to design, build and implement, a disadvantage is that all of the ganged probes must travel in the X, Y and Z axes together. Even if only one of the probes needs to draw a sample from a vessel at a sampling station, for example, all of the probes will be immersed in their respective vessels at a sampling station. This increases the risk of sample and/or probe contamination and carryover.
- each probe can travel toward and away from the deck independently of the other probes. This allows one or more of the probes to be immersed in their respective vessels while the remainder remain suspended above their respective vessels at a sampling station.
- the probes In both cases, the probes must be simultaneously positioned in relation to the various work stations, such as a wash station, sampling station, injection station, etc.
- the transport functionality is completely deterministic both spatially and temporally.
- the transport functionality is either schedule or operation-table driven.
- the system control software would be made aware of the number and types of transportable devices, the number and types of objects on which the devices must operate, and the specific workflow for each object.
- the system also would be instructed, or calculates via a deterministic set of algorithms, where each transportable device must be within the workflow relative to the others (temporally and spatially) and the exact sequence of operations from start to finish.
- the present invention provides a system and method that enables more efficient transport of transportable devices, herein also referred generally referred to as movable devices.
- a system and method according to one aspect of the invention permits operational timesharing of a transport mechanism or multiple transport mechanisms for the movable devices.
- control of a transport mechanism is effected on an event-driven basis.
- the principles of the invention have particular application to an adaptive, synchronized motion and fluids system for automating the sample handling process associated with analytical processes and especially bioanalytical processes such as introducing samples into liquid chromatography (LC), high performance liquid chromatography (HPLC) systems, etc.
- LC liquid chromatography
- HPLC high performance liquid chromatography
- the invention provides an analytical system and method wherein a plurality of movable devices are used in performing one or more operations at one or more stations.
- the stations have associated therewith one or more receivers for receiving one or more of the movable devices so that a prescribed operation can be commenced at the respective station.
- a transport mechanism transports the movable devices from station to station, and a controller directs the transport mechanism to leave at least one of the movable devices with the receiver(s) in a first one of the stations thereby to free the transport mechanism for transport of at least one other movable device between stations while the movable device or devices left at the first station are used to perform a prescribed operation at the first station.
- the movable devices may also be transported between clusters of stations throughout a lab-wide or corporate-wide set of clusters each containing a logical grouping of stations for performing specific operations within each given cluster.
- an analytical system and method are characterized by a plurality of movable devices for use in performing one or more operations in an analytical procedure, a plurality of stations each having associated therewith one or more receivers for receiving one or more of the movable devices so that a prescribed operation can be commenced at the respective station, one or more transport mechanisms for transporting the movable devices from station to station, and a controller for directing a transport mechanism to retrieve one or more of the movable devices from a station in response to a request corresponding to completion of the prescribed operation by a movable device or devices at such station.
- the movable devices may include one or more sampling probes for aspirating and/or dispensing an agent. At least some of the sampling probes may be connected electrically and/or fluidically to a stationary system by a tether for receiving and/or dispensing fluids and/or for communicating with the system controller or other system components.
- the sampling probes may be self-contained thereby eliminating the need for a tether and thus reducing the complexity of coordinating the flow of the sampling probes through the system.
- An untethered self-contained sampling probe typically would include a plunger and a motive device for moving the plunger in response to a command signal.
- the command signal may be effected wirelessly between the sampling probe and a stationary system component, and/or by other suitable means.
- the receivers may assist the movable device in performing a prescribed task at the station.
- one or more of the receivers may include a positioning device for moving the movable device in relation to the station, such as moving or rotating the movable device in relation to one or more movement axes of the station.
- Transport mechanisms typically will include a robotic device such as a robotic arm or other controllable means for effecting transport of the movable devices.
- a robotic device such as a robotic arm or other controllable means for effecting transport of the movable devices.
- Such transport may be effected individually or a ganged arrangement of the movable devices may be moved simultaneously during a transport operation.
- each movable device may be uniquely identified for independent operation by the controller.
- the above-mentioned prescribed operation may include one or more of sample reformatting, sample injection, reagent addition or dilution.
- the stations may include a wash station, a processing station, or a station for supplying liquid reagents.
- Each station may be provided with a signal generator to generate an in-place signal indicating the arrival and positioning of a movable device at the station and particularly in a receiver at the station, after which movable device may be operated, manipulated or otherwise used at the station to perform a prescribed task or other operation.
- a task-complete signal may be generated when the movable device completes the task and communicated to the controller for the transport mechanism which then directs a transport mechanism to retrieve the movable device and deliver it to a next station.
- Such transport request may be coordinated with other transport requests received from other stations.
- the present invention also envisions a self-contained sampling probe including a dedicated metering device for independent aspiration and/or dispensing of an agent, and control circuitry for receiving commands and controlling the metering device.
- the metering device generally comprises a syringe including a lumen, a plunger for drawing and/or dispensing a fluid into and/or from the lumen, and a motive device, such as an electric motor, for moving the plunger.
- the sampling probe may include a power supply for powering the motor and associated control circuitry, or other means by which power is supplied to the syringe at a station.
- FIG. 1 is a schematic illustration of an exemplary embodiment of an analytical system according to the invention
- FIG. 2 is an illustration of an exemplary self-contained sampling probe useful in the practice of the invention
- FIG. 3 is a diagrammatic illustration of a consolidated workflow model
- FIG. 4 is a diagrammatic illustration of a distributed workflow model.
- the invention was conceived and developed as an adaptive, synchronized motion and fluids system for automating the sample handling process associated with analytical processes and especially bioanalytical processes such as introducing samples into LC systems, HPLC systems, etc., it will be herein described chiefly in this context.
- the principles of the invention in their broader aspects can be adapted to other types of systems, such as automotive production line systems and electronic assembly systems.
- the system 20 comprises one or more movable devices 22 for use in the performance of one or more analytical operations, which movable devices may be active devices, such as sampling probes 22 a , and/or passive devices, such as trays 22 b.
- the system further comprises one or more stations which, as shown, may be arranged in groups.
- the system 20 includes one or more wash stations 24 , one or more aspirating stations 25 (two shown), and one or more analysis stations 26 .
- the stations 24 , 25 and 26 have respectively associated therewith one or more receivers 27 , 28 and 29 for receiving one or more of the movable devices 22 a so that a prescribed operation can be commenced at the respective station.
- the stations 25 also are provided with a receiver 30 for the trays 22 b.
- the system further comprises one or more transport mechanisms 34 for transporting the movable devices 22 from station to station, and a controller 35 for directing the transport mechanism to leave at least one of the movable devices with the receiver(s) in a first one of the stations thereby to free the transport mechanism for transport of at least one other movable device between stations while the movable device or devices left at the first station are used to perform a prescribed operation at the first station.
- the moveable devices are transported to and among receivers via the transport mechanism. Once transported, the moveable devices are “released” to the receivers by the transport mechanism, thereby freeing the transport mechanism for transporting other moveable devices between the stations.
- the stations are arranged in relation to what is commonly referred to a “deck” 36 .
- the movable devices 22 and particularly the active movable devices 22 a , can be positioned anywhere in the system without constraint on other movable devices, active or passive.
- the transport mechanisms 34 can be, but are not limited to, robots, particularly robotic devices capable of three-dimensional translating (X, Y and Z axis) and/or rotational movement; levitation devices; antigravity devices; automated slides or tracks; and stackers.
- the transport mechanisms can be equipped with a suitable holder for the movable device being transported.
- multiple transport mechanisms may be employed and independently operated to retrieve and transport the movable devices.
- the movable devices may be transported by attending personnel, as in response to instructions provided by controller either audibly, visually and/or otherwise.
- the movable devices 22 can be, but are not limited to, sample probes/syringes; reaction vessels; plate carriers; sample loops; and other active or passive devices.
- An active movable device is one that is capable of performing an action, such as a syringe that can aspirate or dispense an agent.
- a passive movable device is one that does not perform an action but which can receive or be subjected to an action, such as a vial containing a sample or a tray containing multiple samples.
- An otherwise passive movable device may become an active or intelligent movable device if it is equipped with logic circuitry for storing a workflow and communicating a need for a particular service with the system controller or other system components.
- the stations can be, but are not limited to, wash stations; aspirating and/or dispensing stations, sample reformatting stations; reagent addition stations; dilution stations; shaking stations; thermally and environmentally controlled stations; parking stations; plate handlers; centrifuges; and other processing stations. At any given station multiple processes may be performed, as desired for a particular application.
- the stations may be equipped with positioning devices for positioning components relative to other components.
- the stations may be logically grouped in clusters, and the movable devices may be transported between clusters of stations throughout a lab-wide or corporate-wide set of clusters.
- a cluster of stations may be configured, for example, as an autosampler system or a generic liquid handling system.
- a cluster of stations is one that is grouped for a particular purpose.
- FIG. 1 illustrates one such cluster of stations that functions as an autosampler system.
- the receivers 27 - 30 at the respective stations can be, but are not limited to, grippers; holders; cradles; electrical and/or mechanical grid systems; manipulators; or other components.
- the receivers may physically articulate with the movable device delivered thereto and position it for proper operation.
- the transport mechanism(s) 34 can be a low precision device(s) inasmuch as any high precision positioning needed at a station can be obtained by the receiver or receivers which can include a high precision positioning and/or operationally capable device.
- the receivers 27 - 30 may possess the ability to assist the movable component received thereby in the performance of a requisite task at the respective station.
- the receivers 27 at the wash station 24 may have the capability of raising and lowering a movable device, particularly a sampling probe 22 a , into and out of a wash well or trough.
- Other receiver actions may include not only up and down actuation but also rotation, precise servo driven multi-axis positioning, and others.
- the receivers 30 for the stations 25 may include a high precision X and Y positioning device used for fine positioning of microplates under sampling probes 22 a held in the stations 25 .
- the analytical system 20 shown in FIG. 1 overcomes various drawbacks associated with prior art systems.
- the system of FIG. 1 reduces the number of transport devices and complicated transport controls previously needed.
- the prior art systems also required the transport mechanism to be of high precision if high precision is needed at the station.
- the system of FIG. 1 allows lower cost low precision transport devices to be used to transport the movable devices between work stations.
- the movable devices 22 may include one or more sampling probes (e.g. syringes or pipettes) for aspirating and/or dispensing an agent, sonicators, readers, detectors, or other components. At least some of the sampling probes (or other movable devices) may be connected electrically and/or fluidically to stationary system components 42 by a tether or tethers 43 for receiving and/or dispensing fluids and/or for communicating with the system controller 35 or other system components.
- a tether may be used to supply an agent, specifically a liquid agent, to the probe for metered dispensing.
- a metering device may be employed at the stationary system or integrated into the probe, as desired for a particular application.
- the tethers typically would be flexible to allow for free transport of the probes from station to station. As will be appreciated, provision should be made to avoid entanglement of the tethers. This can be dealt with through appropriate tether awareness and management routines included in the programming of the controller 35 .
- the sampling probes may be self-contained thereby eliminating the need for a tether and thus reducing the complexity of coordinating the flow of the sampling probes through the system.
- An exemplary untethered self-contained sampling probe is denoted by reference numeral 47 in FIG. 2 .
- the probe 47 may include a dedicated metering device 48 for independent aspiration and/or dispensing of an agent, and control circuitry 49 for communicating with the overall system controller 35 (or components thereof) and for controlling the metering device.
- the metering device may include a syringe 52 including a syringe barrel 53 terminating at a lumen 54 , a plunger 56 movable in the barrel for drawing and/or dispensing a fluid into and/or from the barrel via the lumen, and a motive device 57 , such as an electric motor, for moving the plunger via an appropriate gear train or other transmission components.
- the sampling probe 47 may include a power supply 59 for powering the motor and associated control circuitry, or other means by which power is supplied to the syringe at a station. Command signals may be communicated wirelessly between the sampling probe and system controller (or components thereof), or by a make and break signal connection at point of placement (physical electrical contact or inductive), clip on control circuitry, and/or by other suitable means.
- the probes may contain a time of day clock and may be used for timed reactions. For example, the probe may automatically draw up a plurality of solutions, mix them in its barrel, and hold them for a designated amount of time before expelling them. It may also automatically draw up a solution or solutions, wirelessly tell the controller 35 to inform the user to place the syringe in a laboratory device or container separate from its current location (e.g. incubator or refrigerator), sit in the device or container for a designated amount of time, and wirelessly tell the controller to tell the user to remove it from the device or container so it can become part of the active system again.
- a laboratory device or container separate from its current location (e.g. incubator or refrigerator)
- the controller to tell the user to remove it from the device or container so it can become part of the active system again.
- the syringe barrel may also have a cross-port 60 allowing for fast washing once the plunger is fully retracted.
- An analytical system can be operated in an “event driven” mode.
- attention to each device can be provided on an as needed basis with the transportable device itself requesting service as an “event” in a system queue maintained by the controller.
- a system could consist of a single instrument tasked with performing a prescribed set of functions but employing multiple transportable devices.
- the system could include a network of instruments (each employing multiple transportable devices) deployed as part of an enterprise-wide laboratory, facility or corporate automation entity.
- active movable components may request service at the appropriate point within their current workflow and the system controller and/or other components of the system can respond to that request.
- This framework can be extended to include not only transport control but any servicing the active movable components on an event driven basis.
- a system's movable elements might share an electrical discharge device or a heating device whose services are requested on an as needed basis.
- the requests are non-deterministic in nature as they are issued in accordance with each movable component's workflow requirement for such service at such time that it is needed.
- the controller (or dedicated components thereof such as a transport controller) need not know a priori or deterministically which movable devices will require transport at any given time. Instead, the movable devices can be configured to request service at the appropriate point within their current workflow and the transport mechanism commanded in response to that request.
- FIG. 3 depicts one implementation of this paradigm.
- a sample functional workflow manager 65 delivers general workflow requests to a system operation manager 66 such as “deliver x amount of samples a, b and c to injection ports d, e and f of analytical devices, respectively”, and “wash each probe with y amount of washing fluid between each injection”.
- the system operation manager translates the general workflow request into a specific operational workflow for each movable device 67 a - 67 n , such as a sampling probe.
- the system operation manager then communicates with the movable devices (e.g. probes) telling them their respective workflows which may be implemented with the assistance of the receivers 68 a - 68 n at respective stations.
- the movable devices e.g. probes
- New workflows may be transmitted to the movable devices as they complete their current workflow and request a new workflow.
- the movable devices which also can be referred to as “active components”, execute their workflow and generate system events whenever they need assistance performing an operation. Events can include but are not limited to transport requests to the transport manager 69 that controls the transport mechanism 70 , turning equipment on and off, time-of-day synchronization, operations to perform at remote locations, and others.
- FIG. 4 depicts another implementation of the paradigm and uses the same reference numerals to denote components similar to those shown in FIG. 3 .
- a sample functional workflow manager 65 delivers general workflow requests such as “deliver x amount of samples a, b and c to injection ports d, e and f, respectively” and “wash each probe with y amount of washing fluid between each injection” to the system operation manager.
- the system operation manager 66 translates the general workflow request into a specific operational workflow for each movable device 67 a - 67 n . It then communicates with the receivers 68 a - 68 n holding the movable devices and tells them how the movable devices should execute and where the movable devices need to go after they have completed their current task.
- Each receiver relays that information to the movable device it is holding.
- the movable device then executes the task and sends a transport request event signal to the system at the completion of the task for transport to a next station. After the transport is complete, the movable device then may request a next set of instructions be passed to the receiver in which it is situated.
- each movable device may be uniquely identifiable within its control logic to allow control transmissions to reach a specific device on a “hub” via a “broadcast” transmission scheme.
- the controller may maintain a queue of the pending requests for transport.
- a movable device's request for transportation is placed in the queue as a result of a signal from a movable device signaling that it requires transportation. This allows the transportation device to move other moveable devices while other moveable devices are executing an operation.
- the system is therefore flexible and can accommodate processes that require different lengths of time to complete. Even the failure of a particular set of steps or of a particular station need not stop other processes, at least those that do not require the malfunctioning moveable device or failed station. Attention to each device is provided on an as needed basis with the transportable device itself requesting service as an “event” in the system queue. In the case of component failures, the system can work around the failed device(s) to complete the remaining operations. It can even remove the failed device(s) and recruit redundant, similar device(s) to circle back and complete the workflow of the failed element(s).
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Priority Applications (1)
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US11/570,544 US8187535B2 (en) | 2004-06-14 | 2005-06-14 | Robotic handling system and method with independently operable detachable tools |
Applications Claiming Priority (4)
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US57937004P | 2004-06-14 | 2004-06-14 | |
US68583305P | 2005-05-31 | 2005-05-31 | |
PCT/US2005/020732 WO2005124366A1 (en) | 2004-06-14 | 2005-06-14 | Robotic handling system and method with independently operable detachable tools |
US11/570,544 US8187535B2 (en) | 2004-06-14 | 2005-06-14 | Robotic handling system and method with independently operable detachable tools |
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US20070295113A1 US20070295113A1 (en) | 2007-12-27 |
US8187535B2 true US8187535B2 (en) | 2012-05-29 |
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US11/570,544 Expired - Fee Related US8187535B2 (en) | 2004-06-14 | 2005-06-14 | Robotic handling system and method with independently operable detachable tools |
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US (1) | US8187535B2 (ja) |
EP (1) | EP1766417B1 (ja) |
JP (2) | JP4662987B2 (ja) |
WO (1) | WO2005124366A1 (ja) |
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Also Published As
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JP4662987B2 (ja) | 2011-03-30 |
JP2011069832A (ja) | 2011-04-07 |
US20070295113A1 (en) | 2007-12-27 |
EP1766417B1 (en) | 2013-04-03 |
WO2005124366A1 (en) | 2005-12-29 |
JP2008502907A (ja) | 2008-01-31 |
EP1766417A1 (en) | 2007-03-28 |
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